Universal muffler, 17″ (43.2 cm) long, with slider channel. Muffler comes with an inside diameter of 1-3/4″ (4.4 cm) and outside diameter of 1-7/8″ (4.8cm) for use on 1-3/4″ diameter headers. Includes a large 45mm hole screw-on style end cap. Note: Includes a 1-3/4″ to 1-1/2″ reducer sleeve, allowing installation on 1-1/2″ diameter head pipes. Note: Lengths are mentioned for reference only. Note: See 583913 for sound adjustable DB killer.